Solotvyna rock salt deposits. Large salt reserves located near Solotvyna in Tiachiv raion, Transcarpathia oblast. The salt is of a high quality. The deposit, which is 1,800 m long and 400–760 m wide, has been known since the 8th century. Industrial mining began at the end of the 18th century, and by the 20th century eight mines had been opened, and seven of them exhausted. In 1982 two underground mines were active. The salt is processed locally for domestic use and for use as feed. In 1981 total recoverable reserves were estimated at 222 million t. In 1970 the deposit yielded 451,000 t. In 1960 the 326,000 t mined there accounted for 10 percent of all Soviet salt production.